Powering (5V & 3.3V) your Implemented Electronics Projects

Powering (5V & 3.3V) your Implemented Electronics Projects

Hi Link Power Supply

You made something amazing and now it's time to implement it in your house! But, how do you power it? Most hobbyist electronics run on 5 or 3.3 V so you can't just plug it into mains power. And unlike while prototyping, batteries can't be used, as implemented projects need to run for extended periods of time. So, in this post, I will go over some efficient ways to convert mains power into low DC voltages.

Note: Along with mains power, I also suggest setting up a backup battery circuit to use during power cuts. More about that here.

Hi Link Power Supply Module

Hi Link Power Supply
  • Available in 3.3, 5 and 12 V
  • Available in 3W and 5W variants
  • Good efficiency for low price
  • Can be mounted directly on main PCB
  • Can be used even if the circuit is far from the socket
  • Perfect for requirements up to 5W

USB Adapter

5V Adapter
  • Available in 5, 9, 12 V and higher
  • Can provide up to 25W power and more
  • Available in barrel jack as well as USB
  • Cannot be used if the circuit is far from the socket
  • Recommended when more than 5W power is needed


  • Available in 5V and higher, dual voltage configurations also available
  • Used for high current requirements like 5A, 10A, etc
  • Extremely efficient, but expensive
  • Cannot be used if circuit is far from socket
  • Recommended only for high power uses, when other options cannot be used

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